Help

Only with flattening on. A black rectangle drawn over text hides it visually but leaves it in the file, where anyone can select or extract it. With flattening set to “when needed” or “always”, the page becomes an image and the text underneath is gone. The tool warns you when the combination is unsafe.

Applies to PDF editor

Yes, line by line. Double-click a line and type over it; the tool keeps the position and reuses the font. It is meant for corrections (a date, a name, a number), not for reflowing whole paragraphs, which no PDF editor does well.

Applies to PDF editor

Saving your edits invalidates an existing electronic signature, because the signature covers the original bytes. The editor says so when it finds one, so the choice is yours.

Applies to PDF editor

If the PDF has real form fields, they appear in the side panel and can be filled in. The values are written permanently into the downloaded file, so keep the original if you might need to change them later.

Applies to PDF editor

Yes. Pages are copied across untouched, nothing is resampled or recompressed. The result is about as large as the inputs added together.

Applies to Merge PDF

A document that needs a password to open cannot be merged. Unlock it in your PDF reader first and save a copy without the password.

Applies to Merge PDF

Convert the images with the JPG to PDF tool first, then add the resulting file to the merge.

Applies to Merge PDF

Split the document into single pages, then put them back together in the order you want.

Applies to Merge PDF

Click its thumbnail and download the selection as one PDF. Typing the page number into the range field is quicker.

Applies to Split PDF

Yes. Pages are copied with their text layer intact, nothing is turned into an image.

Applies to Split PDF

For documents over 60 pages we render only the first 60 so the browser does not freeze. Pick the remaining pages by typing a range.

Applies to Split PDF

Yes, splitting works the same on scanned PDFs. They simply have no text inside, so the result is not searchable either.

Applies to Split PDF

No. Pages are copied exactly as they are, text, links and fonts included. Nothing is turned into an image, so the document stays searchable.

Applies to Reorder PDF pages

This tool moves and removes pages. If you need to repeat one, pull it out with split PDF first and then join the documents with merge PDF.

Applies to Reorder PDF pages

We draw thumbnails up to page two hundred; the reordering itself handles longer files up to 25 MB.

Applies to Reorder PDF pages

The document stays shut and we cannot help with that. This is real encryption, not a lock we could work around. Put the password in a password manager before you send the file on.

Applies to Password protect PDF

It writes into the document that it should not be printed. Well-behaved readers respect it, but it is a flag in the file, not a real barrier. Anyone who can open the document can always see the content.

Applies to Password protect PDF

Here it is, because the page has nowhere to send it. The encryption runs in your browser and neither the document nor the password reaches a server.

Applies to Password protect PDF

No. Without the right password the document cannot be decrypted and there is no shortcut. The tool only strips the protection once you supply the password.

Applies to Remove PDF password

PDFs distinguish between the password that opens the document and the password that allows edits. Unlocking needs the first one. If the file opens without asking and only edits are locked, enter the permissions password.

Applies to Remove PDF password

Yes. Unlocking runs in your browser, neither the file nor the password is sent anywhere.

Applies to Remove PDF password

Yes, it is written into the file itself. It opens correctly in every PDF reader and prints that way too.

Applies to Rotate PDF

Some readers remember a temporary rotation of their own from the last time the file was open. Try opening it in a new window.

Applies to Rotate PDF

Yes, the type of content makes no difference. The rotation applies to the whole page.

Applies to Rotate PDF

No, the PDF format only allows multiples of 90°.

Applies to Rotate PDF

An image drops into anything: a presentation, social media or a listing. And nobody can copy the text out of it.

Applies to PDF to JPG

No. The text becomes pixels. If you need to keep the text, use the PDF to Word conversion instead.

Applies to PDF to JPG

300 DPI. Anything lower shows up in print as soft edges around the letters.

Applies to PDF to JPG

Yes, it just takes a while and the browser's memory use grows. For genuinely large documents it is better to pull out the pages you need by splitting the PDF first.

Applies to PDF to JPG

Photograph the pages in good light, upload them here in order and choose A4 with margins. The result looks like an ordinary scan.

Applies to JPG to PDF

Up to 30 at a time, each up to 25 MB.

Applies to JPG to PDF

JPG and PNG go in untouched. Only WebP is re-encoded to JPG at high quality.

Applies to JPG to PDF

Yes, make a second PDF and join the two with the merge PDF tool.

Applies to JPG to PDF

The fonts built into PDF readers do not carry accents, so we fold them down to plain Latin letters: “VOID” stays “VOID”, but “INVÁLIDO” becomes “INVALIDO”.

Applies to Watermark PDF

Not from the finished file. Always keep the original without the watermark.

Applies to Watermark PDF

It makes misuse harder, but it is no substitute for a password or an electronic signature. Treat it as a visual marking, not as security.

Applies to Watermark PDF

Not yet, the tool works with text. A logo can be placed with a full PDF editor.

Applies to Watermark PDF

Yes, the text layer is preserved. Compression mostly affects the images.

Applies to Compress PDF

When a PDF is nothing but text there is little to squeeze, so the saving is a few per cent. The big wins come from scans and photographs.

Applies to Compress PDF

Start with the medium level. If that is not enough, go high, or remove the pages you do not need first.

Applies to Compress PDF

No. The file lives only for as long as it takes to process, in a temporary folder that is wiped as soon as the result is sent back.

Applies to Compress PDF

With text documents, usually yes. With heavily designed layouts expect some tidying: no converter handles that perfectly, paid ones included.

Applies to PDF to Word

You need OCR, that is text recognition from an image. Try our image OCR tool and paste the recognised text into Word.

Applies to PDF to Word

Yes, images carry over into the document, though their position may shift.

Applies to PDF to Word

Technically yes. Legally the signed version is the one that counts, so after any edit the document has to be agreed again by both sides.

Applies to PDF to Word

Upload the file on this page and click convert. No sign-up needed; the free daily limit is three documents, and with Premium there is no limit.

Applies to Word to PDF

Yes. Text stays text, you can search and copy it, because nothing is turned into an image. Links and the heading outline work too.

Applies to Word to PDF

They carry over untouched. Fonts are embedded into the PDF, so the document displays correctly even on a computer that does not have them installed.

Applies to Word to PDF

That is PDF to Word. By its nature it is a reconstruction, so with complex layouts things shift. The Word to PDF direction is the reliable one.

Applies to Word to PDF

Yes. You can add page numbers to it, put a watermark on it or sign it.

Applies to Word to PDF

Yes. We embed the DejaVu font, which covers accents and most Latin-script languages, so “Página” or “Anhang” come out right. Only the characters you actually use are embedded, so the file barely grows.

Applies to Add page numbers to PDF

There are six positions, three at the bottom and three at the top. The distance from the edge is set in points, the unit PDFs are measured in: 28 points is roughly one centimetre.

Applies to Add page numbers to PDF

Not from the finished file, the number is part of the page. Keep the original. If you need different settings, run the tool again on the untouched document.

Applies to Add page numbers to PDF

Unlock it first with remove PDF password, then number it. Once it is numbered you can protect it again.

Applies to Add page numbers to PDF

An invoice is valid when it identifies both parties, is numbered and dated, and states what is billed and for how much, all of which this invoice includes. Specific tax requirements differ by country, which is why the tax line is fully under your control: its name, its rate, or leaving it off entirely.

Applies to Invoice generator

That depends on where you are registered and where your client is. Small businesses under a registration threshold often invoice without tax; registered businesses add their local VAT, sales tax or GST. If you are unsure, ask an accountant, then tick the tax box or leave it empty accordingly.

Applies to Invoice generator

Any sequence works as long as it is consistent and unique. The tool suggests a year-based sequence like 2026-001 and continues it for you with the next number on your next visit.

Applies to Invoice generator

No. The PDF is generated in your browser and the invoice never touches our servers. With a free account you can save your seller details and repeat customers for one-click reuse.

Applies to Invoice generator

Five a month free, with a small "Made with anyutil.io" note in the footer. Premium removes both the limit and the note.

Applies to Invoice generator

Yes: no sign-up, no watermark and no download limit. The tool runs in your browser, so a download costs us nothing.

Applies to Resume builder

Only in your browser on this device; nothing is sent to a server. To move to another computer, download your data as a JSON file and load it there.

Applies to Resume builder

Yes, through the data download: save each version as its own JSON file and load it back before editing. Useful when you are applying for different roles and want to emphasise different things.

Applies to Resume builder

Yes. The output is a standard PDF with the font embedded; it looks the same on Windows, macOS and phones, and the text can be selected and copied.

Applies to Resume builder

No. The PDF is opened and signed right in your browser, the file never leaves your computer. With contracts and personal paperwork that is a meaningful difference from services you have to upload to.

Applies to Sign PDF

Yes. You choose whether the signature goes on the page you are looking at, on the last page, or on every page. Every page is what you want when initialling a contract.

Applies to Sign PDF

Unlock it first with the remove PDF password tool, then you can sign it.

Applies to Sign PDF

Yes, tick the option and fill them in. They are set in small type under the signature, as is customary on documents.

Applies to Sign PDF

No, it is never stored. Once the page is closed you draw it again, or save the image on your own machine and upload it next time.

Applies to Sign PDF

No. The file is unpacked and rendered right in the browser, the network never touches it. So you can open material that is not allowed to leave the company.

Applies to PPTX viewer

Close, but not pixel for pixel. Text, images, tables, shapes and colours line up. Charts and SmartArt diagrams are drawn only as a frame with a label for now, and animations and slide transitions are not played. When you need an exact picture, open the file in PowerPoint.

Applies to PPTX viewer

No. PPT is the binary format from before 2007. Open it in PowerPoint or LibreOffice Impress and save as PPTX, then we will play it.

Applies to PPTX viewer

Yes, via File → Download → Microsoft PowerPoint (.pptx). Drop the downloaded file straight in here.

Applies to PPTX viewer

Not unless you open the notes panel yourself. In full screen the notes are hidden and the N key brings them up.

Applies to PPTX viewer

Up to 60 MB. With photo-heavy decks expect a few seconds for unpacking, after that moving between slides is instant.

Applies to PPTX viewer

Yes. The slide scales to the width of the screen and you move on by tapping or with the buttons underneath.

Applies to PPTX viewer

Yes. The downloaded file is an ordinary PPTX in the Office Open XML format, with 16:9 slides, the theme, the notes and the embedded images.

Applies to Presentation editor

No. The editor runs entirely in your browser and the file is assembled only at the moment you download. So you can prepare a deck full of sensitive numbers even on a machine where uploading is not allowed.

Applies to Presentation editor

Yes, each paragraph keeps its own style. Individual words inside a sentence share one style though: mixing weights mid-paragraph would mean writing our own text engine and the editor would get heavy. For one highlighted word, use a separate text box.

Applies to Presentation editor

Yes. A slide can have a transition with a direction and a duration, and every object its own entrance. Both play while presenting and are written into the downloaded PPTX, so they work in PowerPoint too. Motion paths and exit effects are not supported yet.

Applies to Presentation editor

Text with its paragraph formatting, images, shapes, tables, colours, transitions and object entrances all load. Formatting of individual words inside a paragraph is unified, and charts do not load. The original file is left untouched, the editor works on a copy in memory.

Applies to Presentation editor

An ordinary phone photo fits. Bear in mind images also go into the browser's storage, which holds around five megabytes, so with bigger decks it is safer to download your work as you go.

Applies to Presentation editor

Yes. “Edit in the editor” opens it in our presentation editor with every shape and text in place, where you add images, transitions or animations. The downloaded PPTX opens in PowerPoint as well.

Applies to Outline to presentation

Under each slide in the preview is the layout the tool recognised from your text. If you want a plain list instead of numbers or a table, rewrite the bullets so they do not start with a number and have no vertical bar.

Applies to Outline to presentation

Dozens, easily. The preview draws every slide, so with a very long outline allow a moment for it to redraw.

Applies to Outline to presentation

No. Neither the outline nor the finished file leaves your browser; it is built the moment you download it.

Applies to Outline to presentation

No, this is a conversion, not writing. You write the text, we turn it into slides with layouts, colours and shapes.

Applies to Outline to presentation

From the “Notes” field under the slide. While presenting, only the speaker sees them in presenter view; they never appear in the projected deck.

Applies to Speaker notes from PPTX

The presentation has none filled in. Turn on the text from the slides so you at least get an outline.

Applies to Speaker notes from PPTX

No, PPTX only. Open an old PPT in PowerPoint or LibreOffice and save it as PPTX.

Applies to Speaker notes from PPTX

No. The file is unpacked and read right in the browser, so even a deck that must not leave the building goes through.

Applies to Speaker notes from PPTX

No, it only shows it. You make the fix in PowerPoint or in our presentation editor, so the last word stays yours.

Applies to Presentation checker

The thresholds are recommendations, not rules. Leave that title slide with the big quotation exactly as it is, and set the strictness to suit you.

Applies to Presentation checker

No. Use a spell checker for that; this tool looks at appearance and readability.

Applies to Presentation checker

No, it is read right in your browser.

Applies to Presentation checker

Yes. Notes travel with their slide, as do the layouts and the theme.

Applies to Split a presentation

Usually yes, because unused images and layouts are dropped. A deck with a few heavy photos on the slides you kept will not shrink much.

Applies to Split a presentation

Yes. It is an ordinary PPTX that opens in PowerPoint, LibreOffice Impress and Google Slides.

Applies to Split a presentation

No. The file is unpacked and put back together in your browser, so a confidential deck never leaves your computer.

Applies to Split a presentation

The first file decides. Slides from the others are stretched to that size, and we tell you which files that happened to, so a 4:3 deck merged into a 16:9 one does not surprise you.

Applies to Merge presentations

No, and that is deliberate. Every slide keeps the design it came with; forcing one theme would break layouts that were built for another. Unify the look in PowerPoint afterwards if you want it.

Applies to Merge presentations

Up to 60 MB each. Everything is assembled in memory, so with several photo-heavy decks expect a moment's wait.

Applies to Merge presentations

No. The merge happens entirely in your browser.

Applies to Merge presentations

Yes. The downloaded file is an ordinary XLSX in the Office Open XML format, values, formulas, number formats and colours included.

Applies to Spreadsheet editor

No. The calculations and the file assembly both run in your browser, so you can open a payroll or revenue table even on a machine nothing is allowed to leave.

Applies to Spreadsheet editor

Maths (SUM, AVERAGE, MIN, MAX, ROUND, MOD, SQRT), logic (IF, AND, OR, IFERROR), text (LEFT, MID, LEN, SUBSTITUTE, TRIM), lookup (VLOOKUP, MATCH, INDEX), conditional totals (SUMIF, COUNTIF, AVERAGEIF) and dates (TODAY, DATE, YEAR, MONTH, DAY, DAYS). An unknown function shows up as the #NAME? error.

Applies to Spreadsheet editor

The grid renders only the visible cells, so thousands of rows scroll smoothly. Bear in mind the workbook lives in the browser's memory though: for hundreds of thousands of rows a database is the better tool.

Applies to Spreadsheet editor

Charts, pivot tables, conditional formatting and macros. Use Excel or LibreOffice Calc for those; a file from our editor opens in them normally.

Applies to Spreadsheet editor

The English convention: a decimal point and a comma between thousands. When typing we accept both, so 1234.5 and 1 234,5 end up as the same number.

Applies to Spreadsheet editor

Their calculated result goes into the CSV, because CSV knows nothing about formulas. Converting the other way, a cell starting with an equals sign is stored as a formula.

Applies to XLSX and CSV converter

Not in CSV, which holds text only. Numbers, currency, percentages and dates are written exactly as you saw them in the table, though. Converting to XLSX, the format is recognised again from the way the value is written.

Applies to XLSX and CSV converter

No. The file is read and rebuilt in the browser, so you can convert payroll or revenue tables just as safely.

Applies to XLSX and CSV converter

Yes, XLSX is the ordinary Office Open XML format. A comma-separated CSV opens with a double click in most English installations; with a semicolon, use Data → From Text.

Applies to XLSX and CSV converter

Yes, one button opens our spreadsheet editor, where you can edit the file and download it again.

Applies to XLSX and CSV converter

Yes. Quartiles use the same method as QUARTILE.INC and the deviations match STDEV.S and STDEV.P.

Applies to Number statistics

Because nothing repeats. A mode only makes sense where values come back, such as grades or unit counts.

Applies to Number statistics

Tens of thousands without blinking, since it all runs in the browser. For larger volumes use the spreadsheet editor or a database.

Applies to Number statistics

No, the whole calculation runs in your browser.

Applies to Number statistics

Yes, rows are never shuffled. Only the ones already seen earlier in the list disappear.

Applies to Remove duplicates

Select the cells, copy and paste into the box. Columns are held together by tabs, so they are recognised automatically. Or just drop the file in.

Applies to Remove duplicates

No. The comparison is exact, optionally ignoring case and surrounding spaces. Typos like “Smith” and “Smyth” stay as two records.

Applies to Remove duplicates

No, reading the file and comparing it both run in your browser.

Applies to Remove duplicates

By tab or semicolon. When you copy straight out of Excel or Google Sheets, the tabs are already there.

Applies to Table to HTML and Markdown

The text carries over exactly as you saw it, currency and percentages included. Colours, fonts and borders do not: set those with styles in the target document.

Applies to Table to HTML and Markdown

Yes. Copy the HTML and drop it into a Custom HTML block. It works the same in an HTML email editor.

Applies to Table to HTML and Markdown

No, the whole conversion runs in your browser.

Applies to Table to HTML and Markdown

Yes, when downloading to XLSX. A cell with 1,300 becomes a number and 8/4/2026 a date, so you can calculate with them straight away.

Applies to Text to columns

The table widens to match the longest row and the missing cells stay empty. Nothing is lost.

Applies to Text to columns

Yes, open the downloaded XLSX in our spreadsheet editor or in Excel.

Applies to Text to columns

No, the splitting runs in your browser.

Applies to Text to columns

No. With a key column, records are matched regardless of order, so shuffled rows are not reported as a change.

Applies to Compare spreadsheets

Matching goes one by one, first with first and second with second. Whatever is left over comes out as added or removed.

Applies to Compare spreadsheets

Not directly, we read the first sheet. Save the second sheet separately, or copy and paste it into the second box.

Applies to Compare spreadsheets

No, the comparison runs in your browser.

Applies to Compare spreadsheets

No. When you tick that the first row is a header, it is taken once and skipped in the other tables.

Applies to Merge spreadsheets

Yes. Values are recognised when writing the XLSX, so you can calculate and sort with them straight away.

Applies to Merge spreadsheets

Up to twenty at 25 MB each. Everything is read in the browser, so with large workbooks expect a moment's wait.

Applies to Merge spreadsheets

No, the merge happens entirely in your browser.

Applies to Merge spreadsheets

Only columns containing at least one number make it into the chart. A column of notes or codes is skipped. If numbers are not recognised, check that the cells do not contain extra text such as “approx.” or units in the middle.

Applies to Chart from a table

A pie shows the shares of a single series, so it takes the first numeric column. To use another one, move it right after the labels in your table or delete the other columns before pasting.

Applies to Chart from a table

PNG is a raster image rendered at double resolution so it stays sharp on high-density displays; it can be inserted anywhere. SVG is a vector, scales without any loss of quality and opens in Inkscape, Figma or Illustrator for further editing.

Applies to Chart from a table

Up to 500 rows and 12 series. More categories would not be readable in one image anyway; summarise a longer table before pasting, for example by month instead of by day.

Applies to Chart from a table

No, the chart is built in your browser and the data never leaves it.

Applies to Chart from a table

Not in PNG, JPG or WebP: those formats have no layers and the image is flattened into one. When you want to carry on later, save a project: it remembers the layers, the masks and their settings.

Applies to Image editor

Not PSD. It opens the ordinary image formats (PNG, JPG, WebP, GIF and BMP) plus its own projects.

Applies to Image editor

Yes, but your browser does the computing, so with shots of several tens of megapixels the brush can get noticeably slower. It helps to resize the image first to the resolution you actually need.

Applies to Image editor

Single-purpose tools are quicker for that: background removal and blurring faces. The editor earns its keep when there are more edits and you want them under your control.

Applies to Image editor

No. The image is opened in the memory of your browser tab and never sent anywhere. Closing the page loses it, so remember to download the result.

Applies to Image editor

No. Tesseract is built for printed text. Handwritten notes come out right only by accident.

Applies to Image to text (OCR)

When confidence is low, a sharper scan, more contrast or the right language choice all help. Text with accents recognised using the English model comes out stripped of them.

Applies to Image to text (OCR)

No, the output is plain text. Columns and tables collapse into lines, so they usually need rebuilding by hand.

Applies to Image to text (OCR)

It does, but there is no point. If the PDF already contains text (you can search it), use the PDF to Word tool, the result will be more accurate.

Applies to Image to text (OCR)

Windows needs a paid codec from the Microsoft Store. Converting to JPG is the easier route, especially when you are sending the photo on.

Applies to HEIC to JPG

A little. JPG is a lossy format. At 85% and above the difference is practically invisible, though the file will be larger than the original HEIC.

Applies to HEIC to JPG

Settings → Camera → Formats → Most Compatible. The phone then shoots straight to JPG.

Applies to HEIC to JPG

It converts the still frame. The moving part is dropped; a JPG cannot hold it.

Applies to HEIC to JPG

Start at 75% quality and look at the resulting size. If it is still too big, go down five per cent at a time, or reduce the dimensions first.

Applies to Compress image

Above 80% quality, practically not. Below 60% blocky artefacts start showing up, mostly on smooth areas and around text.

Applies to Compress image

No. The new photo has no metadata, so nothing reveals the location or the camera. For sharing that is usually a plus.

Applies to Compress image

Yes, but the output is always JPG, which gives far smaller files for photos. If you need to keep transparency, use the format converter.

Applies to Compress image

1200 px on the longer side is plenty. Marketplaces resize larger photos anyway, so uploading 6000 px only slows you down.

Applies to Resize image

Scaling down often improves it: detail is averaged out and noise disappears. Only enlarging is a problem.

Applies to Resize image

Because the preset you chose has a fixed aspect ratio (Instagram, LinkedIn, YouTube). To keep the whole photo, use custom pixels.

Applies to Resize image

The output is JPG. If you need PNG or WebP, run the file through the image format converter.

Applies to Resize image

That is exactly what the background colour picker is for. Leave it white, or choose the colour the image will sit on.

Applies to Convert image format

For the web, yes. At the same quality it tends to be 25–35% smaller. For print or older software, JPG is the safer bet.

Applies to Convert image format

Yes, HEIC and HEIF are unpacked by a decoder right in the browser. It downloads the first time you drop such a file.

Applies to Convert image format

Browsers cannot write those formats themselves, so ffmpeg compiled to WebAssembly handles them. The core is about 32 MB, downloads once and every later conversion runs without waiting.

Applies to Convert image format

No, the dimensions stay. The exception is ICO, where the image is scaled down to the chosen icon size. Otherwise only the format and the amount of compression change.

Applies to Convert image format

No miracles. The AI adds detail that plausibly belongs in the source, so a small but clean image comes out great. A heavily blurred or very noisy source improves only partially.

Applies to AI image upscaler

Yes. The tool runs entirely in your browser, so an upscale costs us nothing and your photo stays with you. No sign-up, no watermark.

Applies to AI image upscaler

Real-ESRGAN (the realesr-general-x4v3 variant), an open model under the BSD licence by Xintao Wang et al., running on ONNX Runtime. Scales below 4× are downsampled from the network output, which is the standard approach.

Applies to AI image upscaler

Yes, transparency is preserved.

Applies to AI image upscaler

No. The check runs in your browser and the image is never sent anywhere. The only download is the model, and only the first time.

Applies to AI image detector

Photographs at ordinary resolution, ideally as they came out of the camera or the generator, without resampling and without cropping to a small detail. Drawings, screenshots, collages, images with text and heavily compressed social-media thumbnails come out unreliable. The model takes the centre of the image, so for a collage it judges only what is in the middle.

Applies to AI image detector

Unedited output of earlier versions usually yes. Every new generator changes its traces and a detector is always a step behind. The safest approach combines several clues: the detector, the file metadata, a reverse image search and common sense.

Applies to AI image detector

No. No detector, paid ones included, has the reliability such a decision would need. A false accusation does more harm than an unrecognised generated image. If you need to know how an image was made, ask the author for the original and the process.

Applies to AI image detector

Yes, two photos a day with no account. The limit exists because the computation costs server time; with Premium there is no limit.

Applies to Remove background

No. The photo exists only for as long as the processing takes, in the server's memory. It is never written to disk or into logs.

Applies to Remove background

The result is a transparent PNG, so you can put any colour underneath it. For a passport photo the ID photo tool does it in one click.

Applies to Remove background

Fine hair is the hardest case in segmentation. A photo with a more contrasting background and even lighting helps.

Applies to Remove background

The size and proportions match the usual requirements, but rules on expression, glasses, head coverings and background differ by country and document. Check your own authority’s guidance before you go: a rejected photo costs another trip.

Applies to ID photo maker

Most authorities want a plain light background without shadows or patterns. The background replacement turns yours white, which is accepted almost everywhere.

Applies to ID photo maker

Not directly. This tool produces 35 × 45 mm. For a US passport photo you need a square 51 × 51 mm image with different head proportions.

Applies to ID photo maker

Even, diffuse light with no flash shadow behind the head, the camera at eye level, a neutral expression with the mouth closed and both eyes clearly visible. A phone photo against a light wall is usually enough.

Applies to ID photo maker

Flat shapes with clearly separated colours: logos, icons, symbols and drawn illustrations. Photos with soft gradients can be converted too, but the result looks poster-like, broken into a handful of colour areas.

Applies to Vectorise an image

Tracing works pixel by pixel; on a large image it would take a long time and add far more points than necessary. Scaling the longer side to 1,600 pixels speeds the computation up without affecting the outline of a logo or an illustration. The resulting SVG is a vector, so you can then enlarge it to any size without losing quality.

Applies to Vectorise an image

No. The whole conversion runs in your browser; neither the image nor the finished SVG goes anywhere.

Applies to Vectorise an image

The order you add them in. You can reorder them by dragging, or add them again in the order you want.

Applies to Photo collage

So that every cell has the same square shape, the tool takes the largest possible centre crop from each photo. On wide or tall shots that trims the edges. Switch the cell mode to keep the whole image if you would rather not lose anything.

Applies to Photo collage

Up to ten at a time. With larger collages, expect the resulting image to have a high resolution.

Applies to Photo collage

Yes. Either break the lines yourself with Enter, or let the text wrap on its own when it runs wider than the image.

Applies to Text on an image

Not in the finished image; the text is part of the pixels by then. While the tool is still open you can change the wording and the position freely, so keep the original image just in case.

Applies to Text on an image

Yes. The text is drawn at the full resolution of the original and saved as a PNG, with no lossy compression.

Applies to Text on an image

The order you added them: top to bottom when joining vertically, left to right when joining horizontally.

Applies to Combine images

Not a problem. They are scaled proportionally to a shared width (vertical) or a shared height (horizontal) so the edges line up.

Applies to Combine images

No. The whole join runs in your browser; the images never leave your device.

Applies to Combine images

Not at 90, 180 or 270 degrees. The pixels are only rearranged, the image stays as sharp as it was and is saved losslessly as a PNG.

Applies to Rotate an image

PNG keeps the image without loss and handles transparency. If you need a JPG again, run the result through the format converter.

Applies to Rotate an image

This tool works in quarter turns, which covers most of what people need. Free rotation by an arbitrary angle is beyond a quick straighten.

Applies to Rotate an image

The original file on your disk is never touched. The result is saved as a high-quality JPG.

Applies to Adjust a photo

Add brightness first, then contrast so the shot does not turn grey, and finish with a little saturation. Where the shadows are noisy, less sharpness helps more than more.

Applies to Adjust a photo

No. The whole edit runs in your browser; the photo never leaves your device.

Applies to Adjust a photo

The filters are presets, made for a quick result. When you want to move brightness, contrast or saturation yourself, use the photo adjustment tool.

Applies to Photo filters

As a high-quality JPG, which suits photos and sharing alike. The original photo is left untouched.

Applies to Photo filters

No. The filter is computed in your browser; the photo is never sent anywhere.

Applies to Photo filters

Yes. The crop works on the full resolution of the original and simply takes the selected part out of it. Nothing is scaled down.

Applies to Crop image

A circle needs transparent corners, and PNG can store that. JPG knows nothing about transparency and would fill the corners with white or black.

Applies to Crop image

No. The whole crop happens in your browser, the photo never leaves your device.

Applies to Crop image

With a coarse enough mosaic, no: the information is gone for good, which is the whole point. With fine pixelation the shape can still be guessed at, so pick larger blocks when you are hiding something.

Applies to Pixelate an image

Yes. Switch to “One area only” and drag over the spot you want hidden. The rest of the image stays sharp.

Applies to Pixelate an image

Yes. Only the pixelated part changes; the rest is saved unaltered as a PNG.

Applies to Pixelate an image

JPG cannot do transparency; it would save white or black in its place. PNG keeps it, which is why the output is always in that format.

Applies to Remove a colour from an image

Lower the tolerance. A high value also clears shades close to the chosen colour that belong to the object. If a fringe is left instead, raise the tolerance a little or click the fringe colour to add it too.

Applies to Remove a colour from an image

The tool works with colours, not shapes. On flat single-colour areas it is excellent; on a busy background with many colours it runs out of road. To cut an object out of a complicated scene, the background removal tool suits better.

Applies to Remove a colour from an image

No. The tool changes only the metadata part of the file and leaves the image untouched. Nothing is re-compressed.

Applies to Image metadata

EXIF carries a small preview image and a proprietary block from the maker. Both contain internal offsets that would break when the metadata is rearranged, so we drop them on save. The camera, exposure and date fields stay.

Applies to Image metadata

JPG, PNG and WebP. EXIF with a location turns up most often in JPG. PNG usually carries only text captions (author, description, software), while WebP from a website mostly has nothing. In PNG the edited captions are stored as text chunks, as is usual for that format. Convert HEIC photos from an iPhone to JPG first.

Applies to Image metadata

No. The whole edit runs in your browser and the photo never leaves your computer. You can tell because the tool still works with the internet disconnected.

Applies to Blur faces

The saved picture is drawn onto a canvas, so no EXIF metadata carries across, including the GPS coordinates. The original file still has them, so share the edited one.

Applies to Blur faces

The one it arrived in: a JPEG comes out as a JPEG, anything else as a PNG. An unnecessary conversion would only cost quality or inflate the size.

Applies to Blur faces

Yes, mark as many areas as you like. They are all computed together and the undo button removes the last one.

Applies to Blur faces

Up to sixty. The assembly runs in your browser, so with a lot of large photos expect a wait, especially on an older computer.

Applies to GIF from images

No. The GIF is assembled on your machine by ffmpeg compiled to WebAssembly. The first run downloads its core, about thirty megabytes; after that it stays in memory.

Applies to GIF from images

Yes, endlessly, as a GIF is expected to. There is no way to stop the playback; that is a property of the format.

Applies to GIF from images

No, a GIF cannot carry audio. If you need an animation with sound, build a video from the photos in the video editor and add music there.

Applies to GIF from images

There is a separate tool for that, Video to GIF, where you pick the section of the video and the frame rate.

Applies to GIF from images

An SVG refers to a font by name, and when the computer does not have it the browser substitutes another. The reliable fix is to convert text to curves in your graphics program (in Inkscape, “Object to Path”), so the letter shapes become part of the file.

Applies to SVG to PNG

Only if the image is embedded in the file as a data URL. A link to an external file is not loaded, for security reasons, and its place stays empty.

Applies to SVG to PNG

No, the conversion runs in your browser. The SVG is never sent anywhere.

Applies to SVG to PNG

Modern browsers do not need it, a PNG is enough. Plenty of tools and older readers still ask for the file by themselves though, and when it is missing your logs fill up with 404s. That is why it is in the package.

Applies to Favicon generator

On a dark browser bar a dark mark blends into the background. If your logo has dark lines, turn transparency off and pick a light backdrop; the icon then reads in both themes.

Applies to Favicon generator

No. The icons and the archive are built right in your browser, the logo is never sent anywhere.

Applies to Favicon generator

No. Straightening, cleanup and the PDF itself are all done in your browser. Photos of a contract or an ID card never leave your device.

Applies to Document scanner from a photo

Yes. HEIC and HEIF files are converted in the browser before processing; the converter loads with the first such file. Besides those we accept JPG, PNG and WebP.

Applies to Document scanner from a photo

Up to 30. Each photo is one page and the order in the list is the order in the PDF. Split a longer document into two batches and merge the two PDFs with the PDF merge tool.

Applies to Document scanner from a photo

Printed text is most legible in black and white and the file is smallest. The threshold follows the brightness around each pixel, so a shadow across half the page does not turn black the way it would with a plain two-colour conversion. For stamps, signatures in blue ink or photos inside the document switch to greyscale or colour.

Applies to Document scanner from a photo

The longer side of the page is at most 2,500 pixels, which for A4 is roughly 200 DPI. That is enough for reading, printing and sending to an office, and a ten-page PDF usually weighs just a few megabytes. The JPG quality slider controls the trade-off.

Applies to Document scanner from a photo

A scan is an image, so its text cannot be selected or searched. Download it and upload it to the Image to text (OCR) tool, which reads text from a straightened black-and-white page more reliably than from the original photo.

Applies to Document scanner from a photo

Yes, it goes to our server where the segmentation model runs; it would be far too slow in a browser. The photo exists only for the duration of processing, in memory, and is not written to disk or logs, exactly as with background removal. Blurring and compositing happen on your device.

Applies to Blur a photo background

Two a day for free, no limit with Premium. The free limit is shared with the background removal tool because both use the same model. Adjusting the sliders does not count; only finding the subject does.

Applies to Blur a photo background

The result keeps the original dimensions. PNG is lossless; JPG shrinks the file according to the quality you pick, and 80 to 90 % is plenty for the web or messaging. The blur is computed at full size, so the download looks the same as the preview.

Applies to Blur a photo background

Open the photo in the background removal tool, where you can fix the mask with a brush: one stroke restores missing hair, the other erases leftover background. Then place the corrected cut-out on a blurred backdrop in your editor, or simply choose a solid background there.

Applies to Blur a photo background

Blurring smears the subject's colours into its surroundings, and with strong contrast it shows. The tool draws the blurred background slightly enlarged to tuck the halo under the cut-out. If it is still visible, lower the blur or add a little darkening.

Applies to Blur a photo background

No. The code is static, the content is encoded into it for good. We use no redirect that could stop working one day.

Applies to QR code generator

The rule of thumb is a tenth of the reading distance: for scanning from 50 cm a 5 × 5 cm code is enough; for a poster read from 5 metres you need 50 cm. For print, download the SVG or the 1024 px PNG.

Applies to QR code generator

Yes, but the dark dots have to stay on a light background. Most scanners cannot read an inverted code, and with low contrast it fails even in good light. The tool will tell you.

Applies to QR code generator

Around 2,900 characters, but the longer the text the denser the dots and the worse the readability. For longer texts, encode a link instead.

Applies to QR code generator

For internal use, yes: prefixes 200–299 are reserved for a retailer’s own codes and never clash with a manufacturer’s. For anything sold on, the prefix has to be assigned by GS1, otherwise the code may already belong to someone else.

Applies to Barcode generator

It says where the manufacturer registered the prefix, not where the goods were made. A 859 code means a Czech GS1 membership even if the product was made elsewhere.

Applies to Barcode generator

Usually size, contrast or the quiet zone. A barcode needs a clear margin each side, dark bars on a light background and no scaling below about 80 % of nominal. Always test a print with a real scanner.

Applies to Barcode generator

No. The bars are drawn in your browser and the download is generated there too, so an unreleased product code never leaves your computer.

Applies to Barcode generator

Because you see the target before anything opens. A phone camera app often jumps straight to the link, while here the address is written out and can be checked. Fake stickers over genuine codes are a common scam.

Applies to QR code reader

Crop the picture so the code fills most of it, and make sure the whole code including its white margin is visible. A blurred photo at an angle is the usual reason; a screenshot almost always works.

Applies to QR code reader

Yes. Wi-Fi QR codes hold the network name, the security type and the password in plain text, and the tool shows all three. That is worth knowing before printing one for guests.

Applies to QR code reader

PNG, JPG, WebP, GIF and BMP, up to 15 MB. A screenshot from any device is fine.

Applies to QR code reader

Use the “X % of Y” mode, enter the discount and the original price. The “Value decreased by the percentage” card shows the price after the discount straight away.

Applies to Percentage calculator

Because they are counted from a different base. When a price grows from 100 to 120, that is a 20 % increase. Going back from 120 to 100 is −16.67 %, because it relates to 120.

Applies to Percentage calculator

A difference in percentage points is a plain subtraction: from 5 % to 7 % is 2 percentage points, but at the same time a 40 % increase. The calculator shows the percentage change; work out the points by subtracting.

Applies to Percentage calculator

It computes at full precision and rounds only the displayed results to two decimal places. The copied value matches what you see.

Applies to Percentage calculator

Yes. Multiplication and division come before addition and subtraction, powers before those, and brackets before everything. 2 + 3 × 4 gives 14, not 20.

Applies to Scientific calculator

Use degrees for geometry and everyday angles, radians for calculus and physics. sin(30) is 0.5 in degrees but −0.988 in radians, so it is worth checking the switch before trusting a result.

Applies to Scientific calculator

It computes in double precision and rounds the display to twelve significant digits, which hides the floating-point noise that would otherwise turn 0.1 + 0.2 into 0.30000000000000004.

Applies to Scientific calculator

No. The parser and the evaluation both run in your browser, so nothing you calculate leaves the page.

Applies to Scientific calculator

More than two is fine. The LCM and GCD are computed step by step across all of them, so the result holds for the whole group.

Applies to LCM and GCD

A comma, a space or anything that is not a digit. The tool pulls every positive whole number out of the text by itself.

Applies to LCM and GCD

That means the numbers share no divisor other than one: they are coprime. Their LCM is then simply their product.

Applies to LCM and GCD

Up to one trillion. Beyond that, factorising in a browser would take too long.

Applies to Prime factorisation

A prime is divisible only by one and by itself. In the factorisation it then appears alone, for example 97 = 97. The tool marks such numbers.

Applies to Prime factorisation

It helps when you are looking for what divides a number exactly, say when simplifying fractions or splitting something into equal parts. We show every divisor from one up to the number itself.

Applies to Prime factorisation

Ask what happens when the first quantity doubles. If the second doubles too, the proportion is direct. If it halves, it is inverse. Price per item is direct; workers and time are inverse.

Applies to Rule of three

Yes, either way: “6.4” or “6,4”. The result is shown to at most four decimal places, and the copy button gives the plain number.

Applies to Rule of three

Because the first step divides by it. Without it there is no value for one unit, and the proportion has no solution.

Applies to Rule of three

For a direct proportion it also shows the ratio in its lowest terms, so you can see at a glance that 100 : 6.4 is the same as 125 : 8.

Applies to Rule of three

Only as a rough guide. It does not tell muscle from fat, so a muscular person can land in the overweight band while carrying very little fat. It also says nothing about where the fat sits, and waist measurement matters more for health than the index alone.

Applies to BMI calculator

Not in this form. Children are assessed against percentile charts for their age, and in older people muscle loss shifts the result. The bands here are for adults.

Applies to BMI calculator

Take it as one number among several. If it sits well outside the healthy range and you want to do something about it, a doctor is the right person to talk to, not a calculator.

Applies to BMI calculator

No. Weight gain in pregnancy is expected and is tracked differently; the usual bands do not apply.

Applies to BMI calculator

The trip computer shows a long-term average, which is the honest number to use. The manufacturer’s figure is measured in a lab and is usually one to two litres optimistic in real traffic.

Applies to Fuel cost calculator

The tool works in litres per 100 km. To convert, divide 235.2 by the mpg figure: 40 mpg is about 5.9 l/100 km.

Applies to Fuel cost calculator

Enter the number of people including the driver. The card then shows the cost per head, handy when settling up after a shared drive.

Applies to Fuel cost calculator

Air resistance grows with the square of speed, so a car burns markedly more at 130 km/h than at 90. If you have both figures from the trip computer, run the calculation twice and compare.

Applies to Fuel cost calculator

No. The count starts the day after the first date and includes the last one. That matches how deadlines are usually written.

Applies to Days between dates

No. Public holidays differ from country to country, so counting them would mislead more than help. The weekday figure covers Monday to Friday; subtract the holidays of your own country yourself.

Applies to Days between dates

Yes. The order does not matter, the calculator always returns a positive number of days.

Applies to Days between dates

The hint under the total splits the days into whole weeks and the remainder, which is handier for longer ranges than a single large number.

Applies to Days between dates

In a common year the next birthday falls on 1 March, which is how most registries treat it. The number of days lived is exact either way.

Applies to Age calculator

Because months have different lengths. The tool takes the remaining days from the length of the previous month, so the remainder matches the calendar rather than an average month of 30.44 days.

Applies to Age calculator

Yes, any date works. For a date in the future the tool says so instead of returning a negative age.

Applies to Age calculator

It is the days lived divided by seven, useful for babies and for anniversaries counted in weeks.

Applies to Age calculator

Because zero Celsius is not zero Fahrenheit. Multiplying by a factor works for length or weight, but temperature also needs a shift: °F = °C × 9/5 + 32, and kelvin is Celsius plus 273.15.

Applies to Unit converter

US. A US gallon is 3.785 litres, an imperial gallon 4.546, a difference of a fifth, which matters for fuel figures. The cup is the 240 ml one used in American recipes.

Applies to Unit converter

On food labels: the EU prints kJ, most other countries print kcal. One kilocalorie is 4.1868 kJ, so a 2,000 kcal daily intake is about 8,370 kJ.

Applies to Unit converter

The maths runs at full double precision; only the display is rounded. The copy button gives the value at the shown precision, which is enough for anything short of a laboratory.

Applies to Unit converter

Because a bank buys and sells at its own spread and adds a fee. Expect one to three percent worse than the reference rate at a bank, and often considerably worse at an airport exchange counter.

Applies to Currency converter

Once every working day. The ECB publishes reference rates in the early afternoon Central European Time; at weekends and on holidays the last working day’s rates stand, which is why the date is always shown.

Applies to Currency converter

Yes. Both are converted through the euro, which is how cross rates are normally derived. The rate shown is the resulting direct rate between the pair you picked.

Applies to Currency converter

For an estimate, yes. For books and tax returns, use the rate your own authority prescribes; many require a specific central bank’s rate for a given day.

Applies to Currency converter

Because four is normally written IV. IIII survives only on watch faces, where it is a custom rather than a rule. For such input the tool tells you what the correct form looks like.

Applies to Roman numerals

You cannot. The Roman system has no zero (it starts at one) and no negative numbers either. Zero reached Europe with the Arabic numerals.

Applies to Roman numerals

Larger numbers were written with a bar over the numeral, meaning a multiple of a thousand. That bar is used neither in ordinary text nor in school exercises, so we end at MMMCMXCIX.

Applies to Roman numerals

No. Lower case is accepted and converted to capitals for you, as are extra spaces.

Applies to Roman numerals

Because interest is charged on the outstanding balance. In the first years most of the payment is interest and the balance barely moves, so every extra unit paid then removes interest for the whole remaining term.

Applies to Mortgage calculator

It lowers the monthly figure but raises the total considerably. Compare 25 and 30 years on the same amount: the payment falls a little, the interest paid grows a lot. A longer term with regular overpayments is often the better compromise.

Applies to Mortgage calculator

The rate is renegotiated at whatever the market offers then. It is worth running the same loan two percentage points higher to see whether the payment would still fit your budget.

Applies to Mortgage calculator

Building insurance, property tax and service or maintenance charges. They never appear in a mortgage calculation but they leave the same budget every month.

Applies to Mortgage calculator

Because the rate ignores fees. A loan at 7 % with a hefty arrangement fee can cost more than one at 9 % without any, and the APR is what makes that visible in a single figure.

Applies to Loan calculator

A longer term lowers the payment but raises the total interest, often steeply. Try the same amount over three, five and seven years and compare the total: the difference is usually larger than people expect.

Applies to Loan calculator

It depends on your jurisdiction. Many countries cap what a lender may charge for early repayment of a consumer loan, some allow more, so check the rules and the contract before you sign.

Applies to Loan calculator

Usually not, however it is presented. Judge it on price and cover; it only counts towards the APR when the loan is conditional on it.

Applies to Loan calculator

It is an estimate. Only about four percent of babies are born exactly on it, and anything between weeks 37 and 42 counts as term. A date measured from an early ultrasound always takes precedence over a calculation.

Applies to Due date calculator

Because ovulation happens roughly 14 days before the next period, not 14 days after the last one. With a 35-day cycle, conception falls about a week later than the standard rule assumes, and so does the due date.

Applies to Due date calculator

From the transfer date minus the age of the embryo: five days for a blastocyst, three for a day-three embryo. This is the most accurate starting point there is, because the date of fertilisation is known exactly.

Applies to Due date calculator

Weeks of pregnancy are counted as completed weeks: at 12 weeks and 3 days you are in the thirteenth week. The tool shows both, so there is no confusion at an appointment.

Applies to Due date calculator

It is an estimate. Between two people of the same height, weight and age the real energy use can differ by hundreds of kilocalories depending on muscle mass, genetics and health. Treat it as a starting point and adjust after two or three weeks by what the scales say.

Applies to Calorie calculator

Count deliberate exercise, not being generally busy. Most people with a desk job and a couple of sessions a week fall under “light”. Over-stating activity is the most common reason the number comes out too high.

Applies to Calorie calculator

The basal rate is what you would burn in bed all day. Everything else (walking, work, training, digestion) sits on top of it, which is what the activity factor covers.

Applies to Calorie calculator

No. In pregnancy, illness or an eating disorder, follow your doctor instead. Nothing you enter is uploaded; the whole calculation runs in your browser.

Applies to Calorie calculator

Because an ISO week always runs Monday to Sunday and belongs to the year that holds most of it. If the year starts on a Friday, those first days still count towards the last week of the previous year.

Applies to Week number

Yes. A year has 53 ISO weeks when it starts on a Thursday, or when it is a leap year starting on a Wednesday. The tool shows the count for the year you are looking at.

Applies to Week number

No. In the US, weeks often start on Sunday and week one is the one containing 1 January. This tool uses ISO 8601 throughout, which is what business and manufacturing calendars in Europe follow.

Applies to Week number

It shows the last week of that year and says so, rather than silently rolling into the next January.

Applies to Week number

Because not every three lengths make a triangle. The two shorter sides have to add up to more than the longest one, otherwise they cannot close up. The area then comes from Heron’s formula.

Applies to Area and perimeter

It uses Ramanujan’s approximation, which is accurate to better than one part in a million for ordinary shapes. The exact formula leads to an elliptic integral that has no closed form, so approximations are what everyone uses.

Applies to Area and perimeter

No, and deliberately so. All dimensions of one shape are in the unit you picked. Convert first, then compute; that way the result cannot be wrong by a factor of ten.

Applies to Area and perimeter

The display keeps six significant digits, or two decimal places for values over a hundred. The copy button gives the full precision.

Applies to Area and perimeter

For a main activity 5,720 CZK a month for social insurance and 3,306 CZK for health insurance, 9,026 CZK together. They are due even in a loss-making year, from the month the annual reports are filed.

Applies to Czech freelancer tax calculator (OSVČ)

Self-employment alongside a job, a pension, parental leave or studies. Social insurance is only charged once profit passes 117,521 CZK a year, and there is no health insurance minimum because the employer or the state already covers the basic contribution.

Applies to Czech freelancer tax calculator (OSVČ)

A sole trader with income up to 2,000,000 CZK who is not registered for VAT, is not a partner in a general partnership and has no employment income. The band depends on income and the type of activity: up to 1,000,000 CZK is always band 1, trades with the 60 % lump sum qualify for band 1 up to 1,500,000 CZK and crafts with the 80 % lump sum up to 2,000,000 CZK.

Applies to Czech freelancer tax calculator (OSVČ)

Mostly with higher income and low expenses, where standard tax plus insurance would exceed 119,808 CZK a year. It does not pay off if you rely on the child or spouse credits or deduct mortgage interest, since none of those can be applied in the flat regime.

Applies to Czech freelancer tax calculator (OSVČ)

Yes. The unpaid waiting period for the first three days was abolished on 1 July 2019. Compensation is due from the first missed shift.

Applies to Czech sick pay calculator

The employer, from its own funds, and only for days you were scheduled to work. Enter the first day of illness and the calculator counts the shifts from the calendar, including Czech public holidays.

Applies to Czech sick pay calculator

For at most 380 calendar days from the start of the incapacity. The administration can extend it on request by up to 350 more days when recovery is expected soon.

Applies to Czech sick pay calculator

Only if they pay voluntary sickness insurance, and then only the state benefit from day 15. There is no employer compensation for them.

Applies to Czech sick pay calculator

Anyone with at least 270 calendar days of sickness insurance in the two years before the leave who is insured on the day it starts, or is within the 180-day protection period after a job that ended during pregnancy.

Applies to Czech maternity benefit calculator

Only with voluntary sickness insurance paid for at least 180 days in the last year, on top of the general 270 days in two years. The benefit is based on the monthly base they chose, and they must not personally run their business during the leave.

Applies to Czech maternity benefit calculator

The benefit period is always the same length, so an earlier start means an earlier end: 8 weeks before leaves 20 weeks after the birth, 6 weeks before leaves 22.

Applies to Czech maternity benefit calculator

Yes, from the seventh week after the birth under a written agreement with the mother, provided he meets the insurance conditions himself. The benefit is then based on his income.

Applies to Czech maternity benefit calculator

Interest earned not only on your deposits but on the interest already credited. The first few years look unremarkable, then the curve in the chart starts to bend upwards.

Applies to Savings calculator

The annual rate the bank advertises for the account. Watch out for rates that depend on activity or apply only to part of the balance; the calculator wants the rate you will actually receive on the whole amount.

Applies to Savings calculator

Usually because of the deposit date and tax. This calculator places the deposit at the start of the month and deducts tax when interest is credited; banks sometimes assume an end-of-month deposit or show gross interest. The gap is a few percent of the interest, not of the total.

Applies to Savings calculator

The formula does, the certainty does not. For funds or ETFs enter the average return you expect, but remember that real returns fluctuate and tax works differently. Treat the result as a guide, not as investment advice.

Applies to Savings calculator

No, and no other tool can either, paid ones included. Careful human writing scores high, and a model asked for a casual voice scores low. Treat the result as a hint about where to look, never as a verdict about a student or an employee.

Applies to AI text detector

They look at different things. The browser analysis measures surface statistics; the model reads for meaning and for the kind of detail a person tends to include. Disagreement is itself informative: it usually means the text is genuinely borderline.

Applies to AI text detector

At least a hundred and twenty words for the local score to mean anything. Below that, both readings say so rather than pretending to certainty.

Applies to AI text detector

Often not. A few minutes of human editing removes most of the marks both readings rely on, which is one more reason not to treat any score as conclusive.

Applies to AI text detector

No. The tool runs entirely in your browser, the text is never uploaded and never stored.

Applies to Word counter

Yes. Letters with accents count as one character, exactly as in Word or Google Docs.

Applies to Word counter

A number surrounded by spaces is one word. An abbreviation ending in a full stop, like “e.g.”, can push the sentence count up, so in text full of abbreviations treat that number as a rough guide.

Applies to Word counter

The main keyword usually sits between 1 and 3%. A higher share reads as over-optimised and both readers and search engines notice. Density is a hint, not a target: write for people first.

Applies to Word counter

Yes, click the download icon on the summary and you get a plain text file with all the figures.

Applies to Word counter

In the “characters” figure, yes: it counts everything, spaces and line breaks included, exactly as a form field would. The second figure leaves spaces out.

Applies to Character counter

A character is anything at all, digits and punctuation included. Letters are only the letters, which is the number that matters when you are checking how much of the text is actual words.

Applies to Character counter

Yes. Letters with accents count as one character each, the same as in Word or Google Docs. Emoji made of several code points are counted the way the browser sees them.

Applies to Character counter

No. Everything is counted in your browser and nothing is stored, so even a draft contract is safe to paste in.

Applies to Character counter

Most likely you are displaying it in a font whose characters are not all the same width. ASCII art assumes a fixed-width font. Put it in a code block or anywhere with a monospace font.

Applies to ASCII art generator

Only partly. The figlet fonts were built for the English alphabet, so accented letters often come out without their accents or not at all. For a heading with accents, strip them first with the remove accents tool.

Applies to ASCII art generator

No. The fonts are downloaded once and the rendering happens in your browser, so nothing you type leaves your computer.

Applies to ASCII art generator

Yes. The conversion happens in your browser as you type, and tens of thousands of characters are no trouble.

Applies to Text case converter

In English, that is the usual convention for titles, though short prepositions and articles normally stay lower case. In most other languages capitalising every word looks wrong; sentence case is the safer choice there.

Applies to Text case converter

Line breaks and blank lines survive. Bold, italics and other rich formatting do not: this is plain text in and plain text out.

Applies to Text case converter

No. Line breaks, blank lines and spacing all survive; only the letters change.

Applies to Remove accents from text

Compare the two panels: if the result is identical to the input, there was nothing to strip.

Applies to Remove accents from text

Not automatically. Once stripped, the information is gone and no tool can reliably tell which “e” was meant to be “é”. Keep the original.

Applies to Remove accents from text

No. Everything runs in your browser and nothing is stored.

Applies to Remove accents from text

Zero and capital O, or the digit one, lowercase l and capital I, look identical in many fonts. When you type a password out by hand or read it over the phone, leaving them out saves a mistake. Security drops only marginally: add a couple of characters of length and you are even.

Applies to Password generator

In a password manager. Nobody remembers a strong password for every service, and a note in a browser or on an unlocked phone is a weaker link than the password itself.

Applies to Password generator

From a mangled passage of Cicero's De finibus bonorum et malorum, first century BC. Typesetters have used it since the sixteenth century, which is why it looks like Latin without quite being it.

Applies to Lorem ipsum generator

Better not. Filler text left in production is a classic embarrassment, and search engines see a page with no real content. Use it for mock-ups and replace it before launch.

Applies to Lorem ipsum generator

No, the words are picked at random on each run, so you can generate a new variant with one click. Only the opening “Lorem ipsum dolor sit amet” is fixed, and the switch turns it off.

Applies to Lorem ipsum generator

It is instructed not to. The point of a proofreader is to fix errors, not to make everyone write the same way, and the diff makes any overreach visible immediately.

Applies to Proofreader

Read the result through. A model occasionally "corrects" a technical term, a proper noun or a deliberate stylistic choice. Because you see every change, keeping the good ones and ignoring the rest is quick.

Applies to Proofreader

It goes through our server to the model and is not stored or used for training. Even so, avoid pasting anything confidential.

Applies to Proofreader

It keeps the language of the input, so a text in another language comes back corrected in that language.

Applies to Proofreader

They mark facts the model does not have. Fill them in before sending; they are a feature, not a glitch.

Applies to Formal email writer

Yes. The custom recipient field takes precedence over the quick choice, so you can write “the head of the residents association” and the email will be pitched accordingly.

Applies to Formal email writer

Short is at most four sentences, medium two or three short paragraphs, detailed three to five with the context explained. Shorter is usually better; most work email is read on a phone.

Applies to Formal email writer

No. It goes through our server to the model and is not kept or used for training. Still, do not paste anything confidential.

Applies to Formal email writer

Up to the character limit of your plan, shown under the input. Very short texts are refused: below about two hundred characters there is nothing to condense.

Applies to Text summariser

The model is instructed to carry figures over unchanged, and usually does. For anything that matters (a price, a deadline, a name), check it against the original.

Applies to Text summariser

Three sentences for a chat message or a note to a colleague, a paragraph when the summary will be read on its own, bullets when the source is a list of decisions or tasks.

Applies to Text summariser

It goes through our server to the model and is not stored or used for training. Avoid pasting confidential material all the same.

Applies to Text summariser

On cheques and many invoices the written amount is what counts if the digits are disputed: it is far harder to alter “two thousand” than to add a zero to 2,000.

Applies to Number to words

They are dropped. Number mode writes whole numbers, so 12.9 comes out as “twelve”. Use the amount mode when the decimal part matters.

Applies to Number to words

Up to one trillion. Above that the tool says so instead of producing a string nobody would read anyway.

Applies to Number to words

Yes, to the nearest cent, and the rounding cannot overflow: 9.999 comes out as “ten dollars”, not “nine dollars and 100 cents”.

Applies to Number to words

From the letters and digits that stayed unchanged, relative to the longer of the two texts. Spaces and line breaks are not counted, so an added blank line does not lower the match.

Applies to Compare two texts

With ignore case on, “Contract” and “contract” are the same word. Ignore whitespace overlooks spaces at the start and end of a line and repeated spaces inside it, while paragraph breaks are kept. The result always shows the text as you typed it.

Applies to Compare two texts

Each text can have up to 200,000 characters. For very long texts with many changes the tool switches to a faster approximate comparison and tells you so; the result may then report slightly more changes than necessary.

Applies to Compare two texts

Not directly, the tool works with plain text. Copy the content of the document and paste it into the boxes; formatting is lost and only the text is compared.

Applies to Compare two texts

No, the comparison runs in your browser and the texts never leave it.

Applies to Compare two texts

Yes, all of it, with no account and no watermark. Your browser does the editing and the export, so it costs us nothing we would need to charge for. A Premium account raises the file size limit from 100 MB to 1 GB and removes the daily limit on captions from speech.

Applies to Video editor

No. The editor opens it in the tab's memory and does all the work in your browser. The only thing sent to a server is the audio of a clip you ask to caption from speech, and it is deleted after transcription.

Applies to Video editor

Because your computer converts the video on a single thread, not our servers. Expect a 1080p export to take about as long as the video runs, and longer on an older computer or a phone. Lower resolution helps, so does exporting a shorter range between the In and Out marks, and keeping the tab open in the foreground: browsers slow down work in background tabs.

Applies to Video editor

In: common video, audio and image files; a GIF is converted to video when added. Out: MP4 with H.264, WebM, GIF and audio-only MP3, at 480p, 720p or 1080p and 24, 30 or 60 frames per second.

Applies to Video editor

Yes. Pinch to zoom the timeline and long-press a clip for its menu. On a phone the editor suggests 720p, and we recommend clips of a few minutes at most; a longer export can run out of the phone's memory before it finishes.

Applies to Video editor

Either import a finished SRT file, or select a clip and have the captions transcribed from speech. Both ways they appear on the timeline as text clips you can move, trim or rewrite, and you can download them back as SRT at the end. Captions from speech are computed by a server and count toward the daily audio transcription limit.

Applies to Video editor

No, the editor has no noise or echo removal. It offers loudness normalisation, a limiter against clipping and ducking of music under speech. Clean a noisy recording in another program and bring the finished audio into the editor.

Applies to Video editor

Yes. Switch the project's aspect ratio to 9:16, or pick the Shorts, TikTok or Reels preset. Then crop the clip in the inspector, or zoom and pan it, so the part that matters stays in frame. One edit gives you a YouTube version and a Reels version.

Applies to Video editor

No. The editor keeps saving the project, files included, to the browser's storage on your device and offers to restore it the next time you open the page. The exception is a private window, where the browser provides no storage. Do download the finished video after exporting: only the project is saved, not the result.

Applies to Video editor

Chroma key is computed only during export; the preview does not draw it. Set the colour, similarity and edge softness, export a short range between the In and Out marks and check the result in the finished video.

Applies to Video editor

The video is re-encoded, so a little. The highest quality setting keeps the difference below what you can see, at the cost of a larger file.

Applies to Convert a video

Encoding is heavy work and in the browser it runs on a single thread. A minute of full-resolution video takes roughly a minute; scaling down to 720p speeds it up considerably.

Applies to Convert a video

Yes, the audio track is converted along with the picture. If you want the video without sound, use the tool that removes audio.

Applies to Convert a video

VP9 makes smaller files, but encoding it in the browser on a single thread is so slow that a one-minute video would take over an hour. VP8 runs as fast as H.264 and every browser plays it.

Applies to Convert a video

Try AVI or MPG. AVI carries H.264 with MP3 audio, MPG is MPEG-2, which even players from before 2010 understand.

Applies to Convert a video

Up to 200 MB. For longer recordings it is better to shrink the video first with the compression tool.

Applies to Convert a video

A GIF does not compress between frames, it stores nearly all of each one. That is why even a short animation ends up larger than the video. A smaller width and fewer frames per second both help.

Applies to Video to GIF

No, the GIF format cannot carry audio. For short videos with sound, MP4 is better.

Applies to Video to GIF

Leave the length field empty and it runs to the end of the video. With longer recordings, expect a large file and a long computation.

Applies to Video to GIF

No. The video is opened and edited in your browser through WebAssembly. The file never leaves your device.

Applies to Trim a video

Ordinary video such as MP4, MOV, WebM or MKV. The output is always MP4, which practically every device and social network can play.

Applies to Trim a video

The sections you kept are re-encoded so they follow on smoothly, and that is demanding work. In the browser it runs on a single thread, so a longer or higher-quality video takes more time. Close any tabs you do not need and let the tool finish.

Applies to Trim a video

Then the video editor is the easier tool: it handles multiple tracks, its own audio and clips laid one after another. This tool sticks to one video and a quick trim.

Applies to Trim a video

Yes. The result is re-encoded frame by frame and the pixels under the mosaic, blur or black box are overwritten. The original image is not in the downloaded video, unlike an overlay in a player or a subtitle.

Applies to Censor a video

About as long as the video itself: it is recorded by playing through in real time so that everything stays in the browser. For an hour-long recording it pays off to trim the needed part first.

Applies to Censor a video

It depends on the browser: usually WebM, MP4 in Safari. If you need another format, run the result through Convert video.

Applies to Censor a video

The video has to be re-encoded from end to end, and your browser does the computing, not a server. A minute of 1080p costs roughly a minute of work, so give longer files time.

Applies to Compress a video

The resolution. Phone video is often 4K, and scaling to 1080p cuts most of the bulk without showing on a display. Only after that is heavier compression worth reaching for.

Applies to Compress a video

Up to 200 MB. The limit is not in the tool but in the browser’s memory: with larger files the tab dies before the computation finishes.

Applies to Compress a video

No. The picture is not re-encoded, it is simply repackaged without the audio track. Even long videos are done in seconds and look identical to the original.

Applies to Remove audio from a video

Not from the silent video, the original track is not in it any more. Keep the original, or use adding music to a video to lay a new track under it.

Applies to Remove audio from a video

Yes. The processing runs in your browser; the file is never uploaded.

Applies to Remove audio from a video

No. A higher bit rate only preserves more faithfully what is already there. If the original track was compressed at 96 kbit/s, 320 will not get any more out of it.

Applies to Video to MP3

MP4, MOV, WebM, MKV and AVI up to 200 MB. A longer recording takes more time, because the audio is re-encoded on your own device.

Applies to Video to MP3

This tool extracts the whole track. If you need one section, trim the video first and then convert the result.

Applies to Video to MP3

No. The tool runs entirely in your browser; the video is never sent anywhere and nothing is left behind once you close the page.

Applies to Video to MP3

MP3, M4A, AAC, WAV, OGG, Opus and FLAC. The result is always an MP4 with an AAC track, which every phone and social network can play.

Applies to Add audio to a video

Yes. Upload it once and drop it onto the timeline as many times as you like, for instance the same motif at the start and at the end. Every clip keeps its own trim, volume and fades.

Applies to Add audio to a video

The result ends with the video and the music is cut off there. The part of a clip that overhangs is hatched on the timeline, so you see up front what will not make it in. Music shorter than the video leaves the rest of it without any.

Applies to Add audio to a video

Leave the original sound on and pull the music down to about a quarter. A two second fade in and fade out at the ends helps, so the music does not jump in mid bar.

Applies to Add audio to a video

No. For MP4, MOV and MKV the picture is only repackaged and just the audio is re-encoded. WebM and AVI carry codecs that do not belong in an MP4, so there the picture has to be re-encoded and the export takes longer.

Applies to Add audio to a video

No. Editing and export run in your browser through ffmpeg in WebAssembly, the files stay on your computer.

Applies to Add audio to a video

Up to ten, each at most 200 MB. The browser’s memory is the limit, not the tool: with longer footage it is safer to join in smaller groups and then join the results.

Applies to Join videos

Not at all on a fast join, because nothing is recomputed. When re-encoding, the picture is compressed again, though on ordinary video the difference is hard to see.

Applies to Join videos

Re-encoding is heavy work and runs on a single thread in the browser, so that the tool works everywhere. With longer videos, expect minutes. Scaling to 720p speeds it up noticeably.

Applies to Join videos

That is what adding music to a video is for. Join the videos here first, then lay music under the result.

Applies to Join videos

This tool lays the clips hard against each other. Crossfades, titles and parallel tracks are the video editor’s job.

Applies to Join videos

The picture is re-encoded, so a little, but you will not notice the difference in normal viewing. We encode at CRF 23, the usual standard for web video. The file size is usually similar to the original and often smaller for phone recordings.

Applies to Rotate and speed up a video

Phones store rotation only as a note in the file header and every player honours it differently. Actually rotating the picture works everywhere, but it needs a fresh encode. That is why it takes a while: a minute of video takes roughly a minute.

Applies to Rotate and speed up a video

The audio speeds up or slows down together with the picture, but the pitch stays the same. Speech remains intelligible and does not sound like a cartoon. At four times the speed a voice is hard to follow, though.

Applies to Rotate and speed up a video

Reversing has to load every frame into memory, and the browser has a limited amount. Short clips up to half a minute in Full HD go through without trouble; longer ones may end with an error. Trim a longer video first with the video trimming tool.

Applies to Rotate and speed up a video

MP4, MOV, WebM, MKV, AVI, WMV, MPG, 3GP, FLV, TS and OGV. iPhone videos in the HEVC codec are decoded too, they just take a little longer. The result is always MP4; for another format use the video conversion tool.

Applies to Rotate and speed up a video

No. The whole computation runs in your browser, and neither the file nor any part of it leaves your device. The first run downloads about 32 MB of the processing engine, after that everything runs without waiting.

Applies to Rotate and speed up a video

Cropping gives a clean picture without distracting edges but throws part of the shot away. It suits footage where the subject sits in the middle and nothing important happens at the sides. The blurred background keeps the whole shot, so nothing is lost, but the video itself takes up a smaller part of the frame. It works well for recorded talks or videos with on-screen text that a crop would cut off.

Applies to Video aspect ratio and vertical crop

When cropping, exactly as many pixels as the frame covers in the source video; nothing is upscaled, so quality only drops as much as the new encoding implies. When filling, the tool keeps the height of the video (for portrait targets) or its width (for landscape targets), so the canvas never grows beyond the source dimensions.

Applies to Video aspect ratio and vertical crop

Yes, the audio track is converted to AAC together with the picture. A silent video stays silent.

Applies to Video aspect ratio and vertical crop

Browsers cannot play every format: MKV, AVI or WMV usually fail. In that case the tool crops from the centre of the picture at the largest size the chosen ratio allows, and the blurred background mode works as normal. If you want to position the frame yourself, convert the video to MP4 first.

Applies to Video aspect ratio and vertical crop

The picture is re-encoded, and in the browser on a single thread that takes roughly as long as the video lasts. Filling with a background is a little slower because the blurred layer is computed as well. For longer recordings it helps to trim or shrink the video first.

Applies to Video aspect ratio and vertical crop

SRT is the simplest format: a sequence number, a time range written as 00:00:01,000 --> 00:00:03,500, the subtitle text and a blank line before the next block. WebVTT looks almost the same, but starts with a WEBVTT line and uses dots instead of commas in the times. The tool accepts both and converts the file itself.

Applies to Add subtitles to a video

No, they become part of the picture. If you need subtitles a viewer can turn on and off, ship the SRT file alongside the video or upload it to a platform that supports subtitle tracks. Burned-in subtitles are the right choice for social networks, where videos play muted and nobody uploads subtitle files.

Applies to Add subtitles to a video

Subtitle times count from the start of the video. If you trimmed the video or added an intro beforehand, the subtitles shift. Adjust the times in the file, or burn the subtitles first and cut the video afterwards.

Applies to Add subtitles to a video

Yes, long cues wrap onto several lines according to the width of the video. Still, two short lines read better than three long ones, especially in portrait videos.

Applies to Add subtitles to a video

The picture is re-encoded, and in the browser on a single thread that takes roughly as long as the video lasts. The audio is only converted to AAC and does not affect the processing time.

Applies to Add subtitles to a video

The resolution of the video, with no downscaling. PNG stores the frame exactly as the browser decoded it; JPG compresses it further. Sharpness, however, is set by the video itself: a shot blurred by motion stays blurred in the picture, so try a frame further on.

Applies to Capture a frame from a video

The frame is drawn by the player built into the browser, so it only works with videos the browser can play. The most common problem is the HEVC (H.265) codec from iPhones and newer phones, which Firefox and older Chrome cannot decode. Convert the video to MP4 with H.264 first using the video converter, then save the frame.

Applies to Capture a frame from a video

PNG is lossless and suits text, graphics or further editing. JPG is several times smaller and is plenty for a photo-like still. You set the JPG quality with the slider; 85 to 90 % is the usual compromise.

Applies to Capture a frame from a video

At most 200. The images are held in browser memory before download and more full-resolution PNGs would fill it up. For a long video increase the interval, or enter a count and the tool spreads the frames evenly.

Applies to Capture a frame from a video

No. Playback and frame rendering both run in your browser and the video never leaves your computer. There is no processing engine to download either; the tool is ready right away.

Applies to Capture a frame from a video

Up to sixty. The video is assembled in your browser, so with many photos or a long track expect a wait, especially on an older computer or a phone. The tool advises against videos longer than ten minutes, as the browser may run out of memory.

Applies to Photos to video

Shorter music repeats until the video ends. Longer music is cut off when the video ends. If you want the video to end exactly with the music, turn on fitting the length to the music and the time per photo is worked out for you.

Applies to Photos to video

Yes. HEIC photos are unpacked and redrawn in the browser first, so even photos whose rotation lives only in the metadata come out the right way up. Besides HEIC the tool accepts JPG, PNG, WebP, AVIF, GIF, BMP and TIFF.

Applies to Photos to video

The video is H.264 at 30 frames per second with AAC audio, the same as a phone records. Photos are scaled before assembly so the longer side is at most 1920 px, more would not be used by the video anyway. The file size grows mainly with length and resolution, not with the number of photos.

Applies to Photos to video

No. Everything is computed in your browser by ffmpeg compiled to WebAssembly. The first run downloads its core, about 32 MB, and it then stays in memory. Neither the photos nor the music leave your computer.

Applies to Photos to video

Most often the microphone permission is missing. Check the microphone icon in the browser’s address bar. On iPhone and iPad, recording only works in Safari.

Applies to Voice recorder

Only the browser’s memory limits it. An hour-long recording is no trouble; for considerably longer sessions it is better to record in parts.

Applies to Voice recorder

No. Until you download it, it lives only in the open tab. Closing the page deletes it, which is also a privacy protection.

Applies to Voice recorder

No. What was lost the first time it was saved as MP3 is gone for good. A lossless format only stops it getting any worse.

Applies to Convert audio

MP3 at 128 kbit/s is enough for speech and keeps the file small. For music, reach for 256 or 320 kbit/s.

Applies to Convert audio

Yes, upload an MP4 or MOV directly. If all you want is an MP3 from a video, there is a dedicated tool for that too.

Applies to Convert audio

The audio is re-encoded, so with lossy formats a little. Choosing WAV or FLAC as the output prevents it.

Applies to Trim audio

Yes. Split the recording with the S key into as many parts as you need and delete the ones you do not want. The rest are joined into the result in the order they sit on the timeline.

Applies to Trim audio

It shows loudness over time. From it you can spot the pauses between sentences, applause or the start of a chorus without listening to the whole recording.

Applies to Trim audio

Extract the audio first with the video-to-MP3 or audio conversion tool, then trim the result.

Applies to Trim audio

No. Your browser does the editing and the export. The first run downloads about 32 MB of the computing core; later recordings run without waiting.

Applies to Trim audio

The target is −16 LUFS, the usual value for podcasts and music on the internet. Peaks are held below −1.5 dB so nothing clips.

Applies to Audio volume

Gain adds nothing that is not already in the recording. If the signal was too quiet, the noise gets louder along with it. Levelling helps more than a big plus in decibels.

Applies to Audio volume

Yes, enter a negative value.

Applies to Audio volume

The tracks are joined as they are. If one plays noticeably louder, level it first with the volume tool.

Applies to Join audio files

No, the recordings follow one another and never overlap. To lay music under a video, use the tool that adds audio to video.

Applies to Join audio files

Exactly the order they appear in the list. Change it with the arrows on each item.

Applies to Join audio files

Yes, with the Download MP3 button, for every voice in the list. The server voices arrive as a finished MP3, the in-browser voices are converted on the spot. No recording or screen sharing needed.

Applies to Text to speech

The free plan reads up to 5,000 characters at once, roughly three pages, and Premium up to 20,000. Split longer text into chapters; the listening is easier to control that way too. The in-browser voices have no length limit, longer text just takes longer to compute.

Applies to Text to speech

With the server voices, yes: the text goes to our server and from there to Microsoft's speech service, which turns it into audio. Neither the text nor the recording is stored anywhere or used to train models. With the Piper voices everything stays in your browser; only the voice model is downloaded, the first time you use it.

Applies to Text to speech

Because the browser does not let their audio out, so they could only be played, not saved. The voices in the list can do both and sound the same to everyone.

Applies to Text to speech

The server voices are Microsoft's neural voices. The in-browser voices are models from the Piper project (MIT licence).

Applies to Text to speech

Up to ten minutes and 120 MB. Split a longer recording first, with the audio trimmer for instance. The limit keeps the processing time reasonable: the server has two cores and computes for everyone at once.

Applies to Transcribe audio

Roughly a sixth of the length of the recording. A ten-minute recording is usually done within two minutes. Leave the page open while it runs; the result appears by itself.

Applies to Transcribe audio

Once a day free, with a Premium account there is no limit. Transcription is the most computationally demanding thing on the whole site, hence the stricter limit than the other tools have.

Applies to Transcribe audio

MP3, WAV, M4A, AAC, OGG, OPUS, FLAC, and MP4, MOV or WebM from video. With video, only the audio track is used.

Applies to Transcribe audio

No, it does not do speaker separation. You get the text in timed sections, but with no note of who said what.

Applies to Transcribe audio

You attach them to a video on YouTube, in a player or in an editing program. The file holds sections of text with the times they should appear.

Applies to Transcribe audio

Yes. The server hands out the ciphertext once and deletes it in the same operation; a second visit gets only a note that the message no longer exists.

Applies to Secret message

Previews will not destroy the message. Opening the page does not retrieve anything; the message is fetched only when the recipient clicks the button, and bots do not click it.

Applies to Secret message

No. The key is generated in your browser and never reaches the server; we store only ciphertext. Without the key from the link it is unreadable even to us.

Applies to Secret message

Your choice: a day, a week or a month. An unread message deletes itself when the link expires.

Applies to Secret message

Just opening the page does not destroy the message. Clicking "Show the message" does, so send the link straight on and resist checking it.

Applies to Secret message

A thousand per form and fifty forms per account. Plenty for classes, teams and events.

Applies to Form builder

Yes, even after the first responses arrive. Old responses stay; questions that did not exist at fill time show a dash.

Applies to Form builder

No. Only the form's author sees the responses, in their account.

Applies to Form builder

Yes. It uses crypto.getRandomValues, the same source used for generating keys. Nothing is stored, so no draw influences the next one.

Applies to Random picker

As often as you like. Without removing the winner an entry can come up twice; with the box ticked each name wins at most once.

Applies to Random picker

No. The winner is drawn before the wheel starts moving and the animation is aimed at that slice. The spin is there for the audience, not for the maths.

Applies to Random picker

Copy it to the clipboard with one button. Nothing is stored on our side, so reloading the page clears everything.

Applies to Random picker

Hundreds without trouble. On the wheel the slices get thin past about fifty names, so for a very long list the plain draw reads better.

Applies to Random picker

Barely. JPEG, PNG, MP4 and MP3 are already compressed, so a ZIP saves a few per cent at best. It shines on text, spreadsheets and documents, where it can halve the size or better. For photos, use the image compression tool instead.

Applies to ZIP archive maker

Not here. Encrypted ZIPs need a desktop program; this tool neither creates nor opens them.

Applies to ZIP archive maker

Dozens without a problem. Everything is packed in memory, so with several gigabytes the browser can run out of room; in that case pack the files in two or three batches.

Applies to ZIP archive maker

Yes. It is an ordinary ZIP that Windows, macOS and Linux all open with no extra software.

Applies to ZIP archive maker

HEX and RGB are for screens and CSS, HSL is the one to reach for when you want the same colour lighter or less saturated, and CMYK is the print notation. For print, treat the CMYK value as a starting point rather than gospel.

Applies to Colour wheel

A screen mixes light, a printer mixes ink, and the two ranges do not fully overlap. Bright greens and deep blues in particular come out duller in print. The exact result depends on the paper and the printing profile.

Applies to Colour wheel

No. Everything happens in your browser and nothing is sent anywhere.

Applies to Colour wheel

It sorts them by brightness and saturation. The lightest colour becomes the background, the darkest the text (or plain black or white when the contrast would not hold) and the most saturated ones become primary and accent. So the preview stays readable even with a bold palette.

Applies to Colour palette generator

They are the accessibility levels from WCAG. Body text needs a contrast ratio of at least 4.5 : 1, which is AA; the stricter AAA asks for 7 : 1. A ratio from 3 : 1 is only enough for large text, meaning 18 pt, or 14 pt bold.

Applies to Colour palette generator

Yes. A colour cannot be copyrighted and the palettes carry no licence. Take them into a commercial project without asking.

Applies to Colour palette generator

For a single colour and the shades around it, use the colour wheel: it gives complementary, analogous and triadic colours with the codes to copy.

Applies to Colour palette generator

Just open this page. The address loads at the top and copies with one click. We show the one your request arrived from, which is exactly what every site you visit sees.

Applies to What is my IP address

Not entirely: you have to have some address, otherwise there is nowhere to deliver the answer. You can replace it with someone else's by using a VPN or the Tor browser. Sites then see that service's address.

Applies to What is my IP address

The router shows the address on the local network (usually 192.168.x.x or 10.x.x.x), which only applies inside your home. Everything in the household leaves under one public address, and that is the one you see here.

Applies to What is my IP address

No. We read the address from your request, sent it back and threw it away. The other details on the page (browser, resolution, time zone) were read in your browser and never reached us. The details are in the privacy policy.

Applies to What is my IP address

Yes. The stopwatch keeps measuring, only the display redraws less often. When you come back it shows the correct time.

Applies to Stopwatch

No. Everything lives in the memory of the tab and nothing is stored, so closing the page clears the stopwatch and the laps. Copy the laps out before you leave.

Applies to Stopwatch

The time comes from the browser's high-resolution clock, so it is accurate to the hundredth of a second. What it cannot account for is your reaction on the button.

Applies to Stopwatch

No. The countdown lives only in the open tab. You can leave it in the background, but not close it.

Applies to Countdown timer

Yes. Pause stops the clock and resume picks up where you left off. Reset returns the countdown to the length you set.

Applies to Countdown timer

For long waits: to the end of a probation period, to a wedding, to a deadline. It shows days, hours, minutes and seconds.

Applies to Countdown timer

Yes, but phones often suspend the tab once the screen goes dark. For long countdowns an alarm clock is the more reliable choice on mobile.

Applies to Countdown timer

No. It is only another way of writing the same data, and anyone can read it back in a second. Do not use it to protect passwords, personal details or the contents of a contract.

Applies to Base64 encoder and decoder

Older tools work with bytes 0 to 255 and cannot cope with accented letters. Our encoder converts the text to UTF-8 first, so “ř”, “ñ” and emoji all survive the round trip untouched.

Applies to Base64 encoder and decoder

This tool works with text. With images only a limited size fits into a text box; for larger data a command-line tool is the better choice.

Applies to Base64 encoder and decoder

No. Parsing and formatting both run in your browser, so you can paste in a response from an internal API. Nothing is stored or logged.

Applies to JSON formatter

Sorting is optional and exists for comparing two files: with the keys in the same order the differences are easier to spot. It has no effect on meaning, because key order carries no significance in JSON.

Applies to JSON formatter

Ordinary API responses and config files, yes. At tens of megabytes the browser starts to crawl; for files that big a command-line tool is better.

Applies to JSON formatter

No. Your browser does the work and the file never leaves your computer. That is exactly why this tool suits documents you would never upload anywhere.

Applies to Hash generator

Not like this. Passwords need functions designed to be slow, with a salt on top: bcrypt, scrypt or Argon2. A plain SHA-256 of a password can be looked up in a dictionary in moments.

Applies to Hash generator

Usually it is a different algorithm, or the file downloaded corrupted or incomplete. Try downloading again and comparing once more, and check you have the same version of the file.

Applies to Hash generator

They come from the browser's cryptographically secure generator, not from Math.random. They are never sent anywhere and never stored, so only your computer has seen them.

Applies to UUID generator

Version 4 has 122 random bits, which is enough for a one-off link. Be careful with version 7: the creation time in it is readable, so it makes a poor secret.

Applies to UUID generator

That is the nil UUID, used as “no value” where a column cannot be empty. The checker therefore treats it as valid.

Applies to UUID generator

The plus comes from form submissions, while %20 belongs in the address itself. Most servers understand both, but in the path of a URL a plus stays a plus, not a space.

Applies to URL encoder and decoder

It is not. The address stays readable, only written differently. It hides nothing from anyone looking at the link.

Applies to URL encoder and decoder

No, both the conversion and the breakdown run in your browser. Internal links are safe to paste in.

Applies to URL encoder and decoder